"This is an introductory survey of what author Sam Han calls the "technomedia," the generation of communication technologies after television, cell phones, and the first wave of the Internet. Beginning with a history of the media, the book explores the nature and effects of technomedia like the blogosphere, Blackberries, and related technologies. Because such media are transforming the relations of their users to the social environment, the topic is fast becoming an important focus of modern social theory."--BOOK JACKET.